avoiding the cover charge--getting into clubs for free!

Hi everyone. I do not like to pay cover charges and am wondering whether anyone knows how to get into clubs for free. One way is to show up before a certain time---for example, some clubs don't charge a cover before 7 p.m., for example. Another way is to go to the club's website. Some clubs have coupons for free or reduced entry on their website (dejavu.com). Some clubs offer free entry on a certain day of the week (Monday, for example). Some clubs allow free or reduced entry upon presentation of a hotel room key. Others have coupons for free or reduced entry in local newspapers. Some clubs allow free entry upon presentation of a sporting event ticket or a convention badge. One tuscl reviewer got a free pass from the concierge at his hotel. I signed up at one website and they keep sending me passes for free cover to clubs in San Francisco, which is great except I don't live there. I also signed up at the Spearmint Rhino website, but have not received any coupons (although they may have been buried in junk email). One guy said cabbies in Las Vegas have coupons for free club admission. I always ask BEFORE going to clubs whether they have any of these offers for free or reduced admission, and it has definitely saved me some money! If anyone has any ideas about how to get into clubs for free or reduced admission, please post them and let everyone know! Thanks!